25510088940 has 144 divisors (see below), whose sum is σ = 87463353600. Its totient is φ = 5523977088.

The previous prime is 25510088881. The next prime is 25510088941. The reversal of 25510088940 is 4988001552.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 25510088892 and 25510088901.

It is not an unprimeable number, because it can be changed into a prime (25510088941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172480 + ... + 284199.

It is an arithmetic number, because the mean of its divisors is an integer number (607384400).

Almost surely, 2^25510088940 is an apocalyptic number.

25510088940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25510088940 is an abundant number, since it is smaller than the sum of its proper divisors (61953264660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25510088940 is a wasteful number, since it uses less digits than its factorization.

25510088940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456724 (or 456715 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 25510088940 in words is "twenty-five billion, five hundred ten million, eighty-eight thousand, nine hundred forty".